feat(pipeline): implement Pipeline DSL system for automated workflows

Add complete Pipeline DSL system including:
- Rust backend (zclaw-pipeline crate) with parser, executor, and state management
- Frontend components: PipelinesPanel, PipelineResultPreview, ClassroomPreviewer
- Pipeline recommender for Agent conversation integration
- 5 pipeline templates: education, marketing, legal, research, productivity
- Documentation for Pipeline DSL architecture

Pipeline DSL enables declarative workflow definitions with:
- YAML-based configuration
- Expression resolution (${inputs.topic}, ${steps.step1.output})
- LLM integration, parallel execution, file export
- Agent smart recommendations in conversations

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

desktop/src-tauri/src/lib.rs

@@ -27,6 +27,9 @@ mod intelligence;
 // Internal ZCLAW Kernel commands (replaces external OpenFang process)
 mod kernel_commands;
 
+// Pipeline commands (DSL-based workflows)
+mod pipeline_commands;
+
 use serde::Serialize;
 use serde_json::{json, Value};
 use std::fs;
@@ -1314,6 +1317,9 @@ pub fn run() {
     // Initialize internal ZCLAW Kernel state
     let kernel_state = kernel_commands::create_kernel_state();
 
+    // Initialize Pipeline state (DSL-based workflows)
+    let pipeline_state = pipeline_commands::create_pipeline_state();
+
     tauri::Builder::default()
         .plugin(tauri_plugin_opener::init())
         .manage(browser_state)
@@ -1322,6 +1328,7 @@ pub fn run() {
         .manage(reflection_state)
         .manage(identity_state)
         .manage(kernel_state)
+        .manage(pipeline_state)
         .invoke_handler(tauri::generate_handler![
             // Internal ZCLAW Kernel commands (preferred)
             kernel_commands::kernel_init,
@@ -1333,6 +1340,22 @@ pub fn run() {
             kernel_commands::agent_delete,
             kernel_commands::agent_chat,
             kernel_commands::agent_chat_stream,
+            // Skills commands (dynamic discovery)
+            kernel_commands::skill_list,
+            kernel_commands::skill_refresh,
+            kernel_commands::skill_execute,
+            // Hands commands (autonomous capabilities)
+            kernel_commands::hand_list,
+            kernel_commands::hand_execute,
+            // Pipeline commands (DSL-based workflows)
+            pipeline_commands::pipeline_list,
+            pipeline_commands::pipeline_get,
+            pipeline_commands::pipeline_run,
+            pipeline_commands::pipeline_progress,
+            pipeline_commands::pipeline_cancel,
+            pipeline_commands::pipeline_result,
+            pipeline_commands::pipeline_runs,
+            pipeline_commands::pipeline_refresh,
             // OpenFang commands (new naming)
             openfang_status,
             openfang_start,
@@ -1429,6 +1452,7 @@ pub fn run() {
             intelligence::heartbeat::heartbeat_get_history,
             intelligence::heartbeat::heartbeat_update_memory_stats,
             intelligence::heartbeat::heartbeat_record_correction,
+            intelligence::heartbeat::heartbeat_record_interaction,
             // Context Compactor
             intelligence::compactor::compactor_estimate_tokens,
             intelligence::compactor::compactor_estimate_messages_tokens,